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Attic ventilation is basically the flow of air through your attic. Your ventilation components (type) must provide for the adequate inflow of cooler outside air (soffit vent), and adequate outflow of your hotter attic air (turbine vent illustrated).

Attic Ventilation Diagram

So, what’s the fuss about?

Ventilation of the home attic is important for two reasons.

  • During the summer, excess heat that builds up in the attic during the day results in high energy costs for cooling.
  • Moisture produced within the home may move into the attic if ceiling vapor barriers are not used. If this moisture is not exhausted from the attic, it can condense and cause insulation and construction materials to deteriorate and fail. (Insufficient moisture exhausting can also contribute to mold and mildew problems.)

Thus, temperature (high utility bills) and moisture control are the major reasons for providing attic ventilation.


An attic ventilation system is a fundamental requirement for attic ventilation, and provides for natural wind/air cross ventilation of your roof.




Soffit vents are screened intake openings (vents) along the underside of the eaves of the home. This vent provides for the inflow of air.


ATTIC VENT: OUTFLOW (ROOF VENT) There are several types of outflow vents that can be utilized. Selection of an outflow vent is based on how energy efficient you want your home to be. See the options below.

  Wind Turbine Ventilators (12" or 14") Non Powered

Wind turbines use the natural force of the wind to create air flow and provide ventilation. The free spinning turbine is self-lubricating, drawing hot humid air out from the attic. Turbines come in two sizes: 12" and 14". The latter provides almost 30 percent more air flow.

  Power Ventilators

Power attic ventilators work better than a standard vent, and wind turbine ventilator systems. They are electrically powered fans installed in the roof and are controlled by a thermostat which insures your attic ventilation process. They will work even in the absence of natural outdoor wind/breeze.

  Solar Powered Ventilators (Super Cyclone)

The best option by far is the Super Cyclone Solar Powered Ventilator. Using natural resource power, this unit will significantly increase the hot air outflow, which in turn, will result in lower monthly cooling costs. Other benefits of solar powered ventilators, is they do not use energy (no wires) and will add additional years of life to your roofing materials and other parts of your home.


Please note that while we provide information and recommendations on attic ventilators, we do not provide or install roof ventilators (i.e. wind turbines, powered ventilators, or solar powered ventilators). Please contact your roofing contractor for installation and pricing information on these items.

DFW Attic Insulation Services can determine the energy efficiency in your home. With the use of specialized equipment, we can measure the extent of air loss, and identify where those air leaks are. In addition to the audit, DFW Attic Insulation Services can also perform all the energy improvements in your home including blown wool insulation, radiant barrier, attic ventilation and airconditioning and heating services and sales.

We can help you with all attic & attic ventilation energy items: Attic vents, wind turbines, attic fans, blown wool, radiant barrier, soffit vent, radiant barrier spray, radiant barrier paint, attic tent, energy inspection / energy audit, and air conditioning and heating repairs.

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